/Engine/Plugins/Developer/Concert/ConcertMain/Source/Concert/Public/ConcertMessages.h
[EBatchSessionDeletionFlags](API\Plugins\Concert\EBatchSessionDeletionFlags) & operator^= ( [EBatchSessionDeletionFlags](API\Plugins\Concert\EBatchSessionDeletionFlags) & Lhs, [EBatchSessionDeletionFlags](API\Plugins\Concert\EBatchSessionDeletionFlags) Rhs )